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1. [TowerTalk] AM Broadcast Vertical Length (score: 1): Author: "Paul Christensen" <w9ac@arrl.net>; Date: Tue, 29 Nov 2011 23:08:19 -0500; This evening, I took a quick look at the radiator height of some of the major AM broadcast stations in the U.S. Data was taken from the current FCC on-line database. Notice that radiator heights rang; /archives//html/Towertalk/2011-11/msg00458.html (8,286 bytes)
2. Re: [TowerTalk] AM Broadcast Vertical Length (score: 1): Author: "David Jordan" <wa3gin@comcast.net>; Date: Tue, 29 Nov 2011 23:34:25 -0500; OK, so how many folded monopoles are out there in AM radio land? 73, Dave wa3gin -- Original Message -- From: "Paul Christensen" <w9ac@arrl.net> To: <towertalk@contesting.com> Sent: Tuesday, November; /archives//html/Towertalk/2011-11/msg00459.html (6,999 bytes)
3. Re: [TowerTalk] AM Broadcast Vertical Length (score: 1): Author: Jack/W6NF <vhfplus@gmail.com>; Date: Tue, 29 Nov 2011 21:34:54 -0800; WTAL-AM in Tallahassee used one when I worked there in about 1970, primarily because of the extremely poor ground conductivity (approaching that of a glass sheet). I was not on the engineering staff; /archives//html/Towertalk/2011-11/msg00460.html (8,531 bytes)
4. Re: [TowerTalk] AM Broadcast Vertical Length (score: 1): Author: Jack/W6NF <vhfplus@gmail.com>; Date: Tue, 29 Nov 2011 21:46:34 -0800; There were (and may still be) a few stations that used the Franklin antenna, or two half-waves in phase. I heard there was a station (Sioux Falls, SD, if memory serves me...probably not) that put up; /archives//html/Towertalk/2011-11/msg00461.html (9,732 bytes)
5. Re: [TowerTalk] AM Broadcast Vertical Length (score: 1): Author: "Paul Christensen" <w9ac@arrl.net>; Date: Wed, 30 Nov 2011 07:47:31 -0500; Here's the Brittish patent by C.S. Franklin: http://www.aktuellum.com/circuits/antenna-patent/patents/242342.pdf There's aren't many commercial Franklins around due to the serious amount of steel an; /archives//html/Towertalk/2011-11/msg00463.html (8,367 bytes)

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